witnesses say the man was leaving his home in yemen's capital city when two gunmen on a motorcycle pulled up. as the story goes, one called out to the worker and when he turned around, a witness says the killers shot him not once, but three times right in the head. the attack comes as yemen's government goes on the offensive against the al-qaeda branch in that country. the branch that the united states officials have called repeatedly, the terror network's greatest threat to america. the fox report's chief correspondent, jonathan hunt in new york. it seems clear this was not random. the killers were targeting this man. >> in the words of at least one yemeni official, this was a, quote, assassination, shep. this man appears to have been targeted precisely because he worked at the u.s. embassy. in fact, had worked there for some 11 years within a security team. the fear now, of course, is that those who attacked this man may have a hit list of targets. that could include u.s. citizens. listen to victoria nooland from the state department. >> there was obviously an emergency action committee